Past measurement result　by Seawater Radiation Monitor near Fukushima Daiichi Nuclear Power Station

○Information

○Measurement value list ： 2026/06/01(CSV Download)

Radioactivity Concentration Unit:Bq/L

※ When being smaller then detection limit value, the numerical value is indicated with ND

TimeCs137Cs134Totalβ
00:00NDND13
00:10NDND13
00:20NDND10
00:30NDND8.4
00:40NDNDND
00:50NDNDND
01:00NDND10
01:10NDND9.2
01:20NDND9.0
01:30NDND11
01:40NDND12
01:50NDND12
02:00NDND11
02:10NDND14
02:20NDND15
02:30NDND16
02:40NDND16
02:50NDND18
03:00NDND16
03:10NDND12
03:20NDND10
03:30NDND11
03:40NDND12
03:50NDND11
04:00NDND17
04:10NDND18
04:20NDND19
04:30NDND16
04:40NDND15
04:50NDND17
05:00NDND13
05:10NDND15
05:20NDND14
05:30NDND17
05:40NDND15
05:50NDND15
06:00NDND12
06:10NDND11
06:20NDND9.9
06:30NDNDND
06:40NDND9.0
06:50NDND9.7
07:00NDND14
07:10NDND14
07:20NDND15
07:30NDND17
07:40NDND17
07:50NDND16
08:00NDND16
08:10NDND15
08:20NDND17
08:30NDND17
08:40NDND15
08:50NDND17
09:00NDND18
09:10NDND16
09:20NDND16
09:30NDND15
09:40NDND15
09:50NDND12
10:00NDND9.5
10:10NDND11
10:20NDND10
10:30NDND9.6
10:40NDND12
10:50NDND13
11:00NDND16
11:10NDND14
11:20NDND13
11:30NDND14
11:40NDND13
11:50NDND13
12:00NDND11
12:10NDND13
12:20NDND14
12:30NDND13
12:40NDND14
12:50NDND14
13:00NDND15
13:10NDND15
13:20NDND14
13:30NDND15
13:40NDND16
13:50NDND16
14:00NDND18
14:10NDND20
14:20NDND21
14:30NDND20
14:40NDND17
14:50---
15:00---
15:10---
15:20---
15:30---
15:40---
15:50---
16:00---
16:10---
16:20---
16:30---
16:40---
16:50---
17:00---
17:10---
17:20---
17:30---
17:40---
17:50NDND18
18:00NDND18
18:10NDND19
18:20NDND18
18:30NDND20
18:40NDND22
18:50NDND20
19:00NDND18
19:10NDND17
19:20NDND16
19:30NDND15
19:40NDND11
19:50NDND13
20:00NDND15
20:10NDND14
20:20NDND16
20:30NDND16
20:40NDND21
20:50NDND17
21:00NDND16
21:10NDND13
21:20NDND11
21:30NDND9.5
21:40NDNDND
21:50NDNDND
22:00NDNDND
22:10NDND10
22:20NDND9.6
22:30NDND10
22:40NDND10
22:50NDND11
23:00NDND14
23:10NDND16
23:20NDND18
23:30NDND18
23:40NDND21
23:50NDND19